Revised ITR AY 2026-27: How to Correct Mistakes After Filing Your ITR

Making an error on your income tax return is naturally concerning. Correctly computing your income, TDS, and taxes is sometimes a challenge. Fortunately, there is a remedy for taxpayers who are eligible to file an amended return to correct omissions.

For the tax year 2025-26, amending your tax return is covered under the old Income Tax Act, 1961. Therefore, the provisions for amending returns will be the same as in previous years.

This article discusses the latest changes for amending returns for the assessment year 2026-27, common mistakes that can be amended, the steps to complete an amended return, and what to do if the amended return deadline is missed.

What Is a Revised ITR?

A revised ITR is a corrected income tax return filed when a taxpayer discovers an omission or an incorrect statement in a return already submitted.

Under Section 139(5) of the Income-tax Act, 1961, a taxpayer who has filed an original or belated return can revise it within the permitted time, subject to the applicable conditions.

For AY 2026–27, the Income Tax Department confirms that the revised return is governed by the old Act.

Common mistakes that may require a revised ITR

• Incorrect income reported
• Interest income missed from bank deposits
• Incorrect TDS or TCS details
• Eligible deductions not claimed
• Incorrect capital-gains information
• Wrong bank account information
• Incorrect tax calculation
• Other omissions or incorrect statements in the original return

Before revising, it is advisable to reconcile the return with your AIS, TIS, Form 26AS, Form 16, bank statements and supporting documents.

What Is the Last Date to File a Revised ITR for AY 2026–27?

For AY 2026–27, a revised return can generally be filed up to 31 March 2027, or before completion of assessment, whichever is earlier. This extended deadline is a significant change from the earlier three-month-before-the-end-of-the-assessment-year rule.

Will There Be a Fee to Revise My Income Tax Return (ITR) After December 31, 2026?

Yes, starting from AY 2026-27, you will have to pay an additional fee under Section 234-I if you file a revised return.

The additional fee for AY 2026-27 will be charged from 1st January 2027 and will be,

• Rs. 1000 if your total income is Rs. 5 lakhs or less.
• Rs. 5000 if your total income is more than Rs. 5 lakhs.

So, it is better to review your return and make any changes needed as early as possible. You can not afford to wait till March 2027 to make the change.

How to File a Revised ITR for AY 2026–27

The process is straightforward, but the information from your original return must be entered correctly.

Step 1: Collect your records

Check your original ITR against your Form 16, AIS, TIS, Form 26AS, bank statements, investment proofs and other relevant records.

Step 2: Log in to the Income Tax e-Filing Portal

Access your account and select the option to file an income tax return for AY 2026–27.

Step 3: Select Revised Return

Choose “Revised Return under Section 139(5)” as the applicable return-filing section.

Step 4: Enter original return details

You will need the acknowledgement number and date of filing of the original return while filing the revised return.

Step 5: Correct the information

Update the incorrect or missing information and review the entire return, not just the section where you found the mistake.

Step 6: Recalculate your tax

Check the revised total income, deductions, tax payable, interest and refund amount before submitting.

Step 7: Submit and e-verify

Submit the revised ITR and complete the applicable verification process. Keeping the acknowledgement and verification records is advisable.

Revised ITR vs Rectification: Which One Should You Use?

These two options are often confused, but they serve different purposes.

Revised ITR: If you discover an omission or incorrect statement in your filed return, a revised return is generally the appropriate route while revision is available.

Rectification: If your return has already been processed and there is a mistake apparent from the record in an intimation or order, you may use the rectification facility where applicable. The Income Tax Department specifically states that rectification should not be used for a mistake that can be corrected through a revised return.

Can You File a Revised ITR More Than Once?

Yes, a return can generally be revised again within the permitted time if another mistake is discovered. However, taxpayers should carefully check the complete return before each submission to avoid creating further discrepancies.

What If You Discover a Mistake After the Revised ITR Deadline?

Once the revised-return window has closed, a taxpayer may need to consider whether an Updated Return (ITR-U) is available under Section 139(8A), depending on the circumstances and statutory conditions.

An ITR-U is not simply a replacement for a revised ITR and has separate eligibility conditions and additional tax implications. The Income Tax Department confirms that AY 2026–27 can continue to be governed by the old Act for such proceedings even after the new Act comes into force.

Common Mistakes to Avoid While Filing a Revised ITR

Before submitting your revised return, check:

• Assessment year is 2026–27
• Correct ITR form has been selected
• Revised return under Section 139(5) is selected
• Original ITR acknowledgement number and filing date are correct
• Income matches your supporting records
• TDS/TCS details match Form 26AS and AIS
• Deductions are supported by valid documents
• Bank details are correct
• Tax and interest have been recalculated
• The revised return has been successfully verified

Conclusion

A mistake in your filed ITR does not necessarily mean you have to live with an incorrect return. For AY 2026–27, eligible taxpayers can generally file a revised return under Section 139(5) up to 31 March 2027, subject to completion of assessment, while an additional fee applies to revisions filed from 1 January 2027. 

The key is to identify the error, reconcile your records, and submit the corrected return properly. If you are unsure whether you need a revised ITR, rectification or ITR-U, FinSpyne can help you review your tax position and choose the appropriate compliance route.

Frequently Asked Questions About Revised ITR AY 2026-27

What is the revised ITR last date for AY 2026-27?

For AY 2026-27, a revised Income Tax Return can generally be filed up to 31 March 2027, or before completion of the assessment, whichever is earlier. From AY 2026-27 onwards, the revised-return deadline has been extended to the end of the relevant Assessment Year.

Can I revise my ITR after 31 December 2026?

Yes. For AY 2026-27, a revised ITR can generally be filed from 1 January 2027 to 31 March 2027, subject to the applicable conditions. However, an additional fee under Section 234-I applies during this extended revision period.

The additional fee is ₹1,000 if total income does not exceed ₹5 lakh and ₹5,000 if total income exceeds ₹5 lakh.

Can I correct a mistake after my ITR has been processed?

It depends on the nature of the mistake. If you discover an omission or incorrect statement in your own filed return and the revision window is still open, you may generally correct it by filing a revised return under Section 139(5).

If the return has already been processed and there is a mistake apparent from the record in the intimation or order, you may instead need to submit a rectification request through the Income Tax e-Filing portal.

Is a revised ITR the same as ITR-U?

No. A revised ITR is filed under Section 139(5) to correct an omission or wrong statement in a previously filed return, subject to the applicable deadline and conditions.

An Updated Return (ITR-U) is governed by Section 139(8A) and has separate eligibility conditions, time limits and additional tax implications. Therefore, ITR-U should not be treated as a simple replacement for a revised ITR.

What mistakes can be corrected through a revised ITR?

A revised ITR can generally be used to correct errors or omissions in a previously filed return, such as incorrect income details, missed income, incorrect deductions or other information reported incorrectly in the original return, provided the conditions for filing a revised return are satisfied.

Do I need to file the entire ITR again when filing a revised return?

Yes. A revised return generally replaces the earlier return for the purpose of processing. You should provide the corrected information along with the other applicable details and enter the required information about the original return, including its acknowledgement details.

Can I file more than one revised ITR?

Yes, a taxpayer may generally file another revised return if a further mistake is discovered, provided the revised-return conditions and applicable deadline are still satisfied.

Do I need to e-verify my revised ITR?

Yes. A revised ITR must be verified using the applicable verification process. If the return is not properly verified within the prescribed time, it may not be treated as a validly filed return.

What happens if I miss the revised ITR deadline?

Once the applicable deadline for filing a revised return has passed, you generally cannot use Section 139(5) to revise the return. Depending on the circumstances, another mechanism such as an Updated Return (ITR-U) or a rectification request may be relevant, but each has separate eligibility conditions and limitations